William v



SASH HOLDER. v 10.426.905I PatentedApr.29,189o.

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PATENT wILLIAM v. BLEI-IA, or ST. LOUIS, MISSOURI, ASSIGNOR OE ONE-HALF To JOHN E. DOMIIOEE, or SAME PLACE.

SASHTHOLDER.

SPECIFICATION forming part of Letters Patent No. 426,905, dated April 29, 1890.

Application led July 11, 1889. Serial No. 317,125. (No model.) i

To @ZZ whom it may concern.-

Be it known that I, WILLIAM V. BLHA, of the city of St. Louis, in the State of Missouri, have invented a certain new and useful Improvement in Frictional Sash-Stops, of which the following' is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

This invention relates to adjustable frictional rubber rollers re-enforced by a system of compound pressure spiral springs; and the invention consists in features of novelty hereinafter fully described, and pointed out in the claims.

Figure I is an elevation of a window sash and frame to which my sash-stop is attached. Fig. II is an enlarged longitudinal section of the cylinder that incloses spring-pressure devices that impress the frictional rollers, and shows one of said rollers in frictional contact with the window-frame. Fig. III is an enlarged detail edge view of the sash, and shows the frictional rollers projecting from the attachment-plate by which the device is secured .to the sash. Fig. IV is a vertical section taken on line IV IV, Fig. VI, and shows the means of locking the adjustment of the impressment-springs. Fig. V is a vertical seotion taken on line V V, Fig. III, and shows the friction rubber roller and the action of the main spring in the impressment thereof. Fig. VI is a horizontal section taken on line VI VI, Fig. III, and shows the action of both the main and minor ilnpressment-springs on the friction-roller, the minor spring acting by pressure on the rubber friction-pad which presses the drum that carries the frictionroller disks; and Fig. VII is a vertical section taken on line VII VII, Fig. V, and shows the adj usted action of the T-head ram-bolt on the minor spring.

Referring to the drawings, I represents a window-frame, and 2 the upper and lower sash of a window to which my frictional sashstop is attached. A

3 represents the cylinder which incloses the ,spring-actuated impressment devices, and

which cylinder is brazed, soldered, or otherwise secured to the attachmen t-plate 4, through perforations 5 in which pass the wood-screws 6, that screw into the sash adjacent to the cylindric chamber 7, which is bored therein, in which chamber the cylinder 3 is seated. The attachment-plate is provided with a cut-away 8 in its center, through which the two rubber friction-disks 9 of the roller 10 project, so as to come into frictional contact with the side jams ll of the window-frames l and to hold the sash in any position in which it is placed.

The trunnions or journal-pin I2 of the'roller IO, that carries the friction-disks, have bearings 13 in the bifnrcated head 14 of the hollow stein l5, which is located in the forward or outer end of the cylinder 3, the bifurcated forks of its head resting against the inside of the attachment-plate and the whole being inclosed within the cylinder. The interior of said hollow stein forms the minor spring chamber 16, in which is housed the longitudinally-impressed friction-block 17, which is preferably of metal, and which presses against the roller IO, that carries the rotary rubber friction disks. pressed against said roller by the minor spiral spring IS, which is also housed in said springchamber 1G, and is adj ustably backed up to its work by the pressure-screw 19, the arms of whose T-head 2O press against the rear end of said minor spring and work within two of the opposite corresponding guideslots 2l in the rear end of said hollow stein. The pressure force of the screw 19 on said minor spring is adjusted by the screw-nut 22, that engages on the screw-threaded end of said pressurescrew. The washer 23, that presses against said nut, is held to its required adjustment by the bifuroated key 24., that is held captive in the key-hole slots 25 in the side of the cylinder.

26 represents the main spiral spring, that is The said friction-block is housed in the main-spring chamber 27, and i which spring pushes against the shoulder 28 of the bifurcated head I4., in which are located the journal-bearings of the roller 10, that carries the rotary friction rubber disks 9. The said spring is adjusted to its required tension to accord with the weight of the sash to which it is attached by the same washer 23 and bifurcated key 24 that also adjust the tension IOO of the minor spiral spring 1S, as the washer 23 presses directly on the main spring, and is, as previously stated, itself held by the engagement at its back of the bifurcated key 24 in the key-hole slots 25 in the cylinder, the said key being adjusted in the respective key-hole slots that will insure the tension-spring force required on the friction-rubbers that sustain the sash. It'will thus be seen that my adjust-able sash-stop exercises the functions of a compound friction-brake under a compound spring-pressure, the minor spring enforcing the pressure of the friction-block 17 (which is preferably of metal) on the roller 10, that .carries the rubber friction-disks, and so retarding their movement with that of said roller and the main spring, which presses direct on the head whose journ al-bearin gs carry said roller, and in consequence enforces the frictional pressures of the rubber disks against the side pieces of the frame Within which the sash slides. 'lhe frictional rubber brake can thus be exactly regulated to sustain the varied Weight of sash of various sizes and thickness. The use of Weights and cords and the Weight-chambers Within the frames are thus dispensed with, and said chambers being dispensed with the inconvenient and unsightly removable strips to gain entrance to said Weight-chambers are dispensed with also. It will also be seen that'bythe avoidance of said weight-chamber aharbor for rats, mice, and other vermin is dispensed with and the Window-frame is much more readily made airtight. Again, it Will be seen that by means of the adjustable features of this device by the transference of the bifurcated locking-key from one corresponding pair of key-holes to anotherthe spring-tension on the frictionrubbers can readily be either increased or diminished Whenever from change of the Weather from damp to dry, or vice versa, the sash becomes respectively either loosened or tightened in its frame; also, When from the seasoning,r of material or the conjoint Wearing of the part-s the usual joint-friction is reduced, as in old sash and frames that have shrunk by the seasoning` and Wear of years, the lost friction is replaced by the readjustlnent of the tension of the compound springactuated ten sion of the rubber friction-brakes.

The above-described parts, the constructive elements of my invention, may be formed of any suitable material.

I have shown t-he pressure-screw 19, that presses against the minor spiral spring 16, with a T-head that fits in the corresponding guide-slots 2l in the tubular stem 15, that houses said minor spring, which guide-slots may be extended to any length required to provide increased latitude to the operation of the pressure screw in the compression of the spring; but, While I prefer the use of said T- head to the pressure-screw With said guideslots in the tubular stem in which it is guided and held from rotation at its Work, yet it may also be constructedWithout a T-hcad, and it then has a round head that freely follows on the head of the spring Within the tubular spring-chamber 16.

In the upper arched sash in common use in some buildings the cylindric bore in the sash forming the cylindeiehamber '1 forhousing the cylinder 3 may in such cases be 1nclined to adapt it to the incline of said arch, and the attachment-plate 4; will then be sccured to the face end of said cylinder at the necessary bevel incline to still secure its vel'- tical position.

Not only is the tension-pressure of the springs adjustable by the transference of the locking bifurcated key from one key-hole slot to another to adapt them to various sizes and consequent Weights of sash which they are required to sustain, but also the strength and size of the springs, their housings, and att-achments may be varied to adapt them to the labor imposed upon them.

The cylinder 3, the journal-boX-bcaring head, the tubular stem, the roller, and the friction-block 17 may be of iron, brass, or any other suitable material, and the frictiondisks 9 are preferably, as stated, of rubber, but may be made of leather or any other suitable material.

I claim as my invention- 1. In africtional sash-stop, the combination of the bifurcated journal-bearing-box head provided with a hollow stem at the rear of said box-head, the roller journaled in said boxhead, the rubber friction-disks mounted on said roller, the friction-block 17, that presses against said roller, the minor spiral spring 18, that is housed in said hollow stem, the T-hcaded pressure screw-bolt 19, Whose head Works in the guide-slots 21 in the said hollow stem and enforces the tension of said spring, and the screw-nut 22, that adjusts the force of said tension in pressing` the rubber' friction-block against said roller, substantially as described, and for the purpose set forth. W

2. In africtionalsash-stop, the combination of the metal cylinder 3, provided with keyhole slots 25, the journal-bearingbox head with its tubular rear stem, the roller j ournaled in said box-head, the rubber friction-disks mounted on said roller, the friction-block '17, that presses against said roller, the minor spiral spring 18, the pressure screw-bolt 19, that enforces the tension of said spring on vsaid friction-block and said block on said roller, the screw-nut 22, that adjusts the force of said tension, the pressure-Washer 23, and the bifurcated key 24E, that is adj ustably seated in the respective key-slots to regulate and lock the spring-tension on the friction rubber disk-brakes that stop the sash, substantially as and for the purpose set forth.

3. In africtional sash-stop, the combination of the metal cylinder 3, housed in the sash and provided with key-hole slots 25, the j ournahbearingbox head with its tubular rear stem, the roller journaled in said box-head,

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that the roller carries to eiect a friction-grip 1o of saiddisks on the side j arnbs of the windowframe, substantially as described, and for the purpose set forth.

WILLIAM V. BLHA.

In presence of` BENJN. A. KNIGHT, SAML. KNIGHT. 

